Climate Scientists Dishonestly Cherry-Pick Wildfires to Push a Climate Crisis!

By Jim Steele

Egregious cherry-picking by alarmist climate scientists attempts to delude the public into believing that a slight increase in wildfire burnt acres can be blamed on rising CO2. First, they dishonestly ignore the scientific evidence that far more fires happened before the 1930s when CO2 and global temperatures were much lower than today (Graphic A).

Nonetheless, Daniel Swain, click-bait media’s go to “scientist”, myopically sees every negative environmental change as a function of rising CO2 due to his tutelage under alarmists Michael Mann and Noah Diffenbaugh. So unsurprisingly Swain falsely pontificates, “Recent work points toward anthropogenic climate change rapidly altering Western United States (WUS) fire regimes to produce overall more extreme wildfires.”

Sadly, Swain is just a useful idiot of the World Economic Forum’s push for global governance claiming, “Slowing and reversing the accumulation of CO2 and other greenhouse gases in the Earth’s atmosphere will slow the acceleration of wildfire risk.”

(https://x.com/JimSteeleSkepti/status/1814681971664052663/photo/1)

Despite evidence that heat waves have no significant effect on grassland flammability, Swain argues, “Any significant heat wave “has been made substantially more likely and warmer than it otherwise would have been as a result of human-caused climate change.” But regions experiencing cooling trends like the US warming hole, also experience extreme heat waves.

 Read: Science of Heat Waves Reveals Blaming CO2 is a Scam! https://x.com/JimSteeleSkepti/status/1799125891731329105

To push the climate crisis-wildfire connection, dishonest scientists cherry-pick wildfires in California and western USA as proof of a climate crisis. But the western USA is naturally much drier than the eastern USA (Graphic B) and thus more prone to more frequent and more widespread fires. People outside the western USA, (and outside southern Europe’s similar climate), are surprised to learn that hardly any rain falls during the summer in California’s Mediterranean climate (Graphic C) resulting in natural dryness that supports more fires.

Additionally dishonest scientists falsely push climate change by ignoring the relationship between naturally dry climates and fire prone vegetation. Dishonest scientists avoid describing easily ignited grasslands and shrubs that burn three times more acres than forest fires.  Grasses and shrubs are classified as 1-hour and 10-hour fuels, because they become highly flammable in a few days of dry weather no matter how climate has changed. In Prescribed Burning in the California Mediterranean Ecosystem (1982), Green advised that complete prescribed burns in grasses can be set “soon after rainstorms”, and in small brush in just several days.

Grasslands cover a large portion of California (brown color, Graphic D). Grasslands are the most fire prone habitat during California’s natural summer drought. Dead grasses and shrubs fuel the most easily ignited, fastest spreading and most extensive wildfires. Grasses and shrubs have driven California’s biggest fires, as is currently happening in California’s Park Fire. Forested areas experience fewer wildfires (Graphic E) and are often driven by dead grasses and shrubs that provide a path for fires into the forest floor and provide a source of sufficient heat for ignition. Grass fires burn at temperatures of 1000+ Fahrenheit. The increased temperatures of just 2.7F (1.5 C) from climate change makes no difference regards a grass fire’s ability to ignite brush and debris on the forest floor.

In the past grass fires passed across forest floors without burning the trees. However, years of 20th century fire suppression has caused brush and debris to accumulate and provide the increased heat required to ignite bigger logs (1000-hr fuels) and trees.

Between the lower elevation grasslands and the higher elevation forests, grasses carry fire into the open Oak woodlands (dark green, Graphic D) which is the common habitat around Chico and the Park Fire (Graphic F). Elsewhere grasses carry fire into chapparal/shrublands (Graphic G). The current Park Fire has rapidly spread though such grasslands and to date has become California’s 7th biggest fire.

For California, and most of the western USA, annual grasses die by early summer and naturally become highly flammable from June through September, as their fuel moisture content drops below 10%. Summer heat waves that raise average maximum temperatures by a few degrees, do not increase grass flammability to any significant degree. Nor do metrics of a higher vapor pressure deficit further affect dead grass flammability.

However, what is rarely pointed out by alarmists fixated on attributing large fires to climate change, the western US has increased the biomass of highly flammable invasive annual grasses. Non-native grasses, like cheatgrass, have invaded increasingly larger expanses of habitat (Graphic H), with cheat grasses accounting for much of the greater burnt areas from wildfires (compare graphics B an H). Wetter El Nino years further increase the amount of grass that then serves as fire fuel the following year.

Finally in contrast to Swain’s alarmist rants that “Butte County (i.e. Park Fire) has become a “poster child” over the past decade for what can happen when a warming climate triggers extreme summers and winters”, Swain ignores the local temperatures and the U.S. Historical Climatology Network evidence that northern California’s maximum temperatures were warmer in the 1910s to 1930s (Graphic I from Chico and Park Fire). Thus, Swain’s and bogus narratives from the World Economic Forum are not supported by scientific evidence that global warming has made “Extreme Heat Waves are 5 times more likely in the past 150 years.”

CO2 has not caused “more extreme wildfires”!

 (Read: Science of Heat Waves Reveals Blaming CO2 is a Scam!

https://x.com/JimSteeleSkepti/status/1799125891731329105 )

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Tom Halla
July 29, 2024 6:09 pm

The Green Blob opposes wildlands management. Grazing? Unnatural species, and we should all be vegan anyway, Logging? Doubleplus ungood crimethink! Controlled burns? Think of all the smog and particles!

Scissor
Reply to  Tom Halla
July 29, 2024 7:26 pm

Climatologists are the Baghdad Bobs of science.

Nick Stokes
July 29, 2024 6:24 pm

” First, they dishonestly ignore the scientific evidence that far more fires happened before the 1930s”

The “evidence” quoted is not scientific. The source claimed is the NIFC, but that body, on its site said:
“Prior to 1983, the federal wildland fire agencies did not track official 
wildfire data using current reporting processes. As a result, there is no 
official data prior to 1983 posted on this site. “

The “data” in fact comes from an ancient census documant, which carried a heavy disclaimer. And well they might. 50M acres is the area of Nebraska, and the graph claims such an area was burnt by wildfire every year.

Reply to  Nick Stokes
July 29, 2024 6:43 pm

More scientific evidence

Swetnam-199s-fire-frequency
Reply to  Nick Stokes
July 29, 2024 6:46 pm

And more scientific evidence

fire-frequency-since-1700
Nick Stokes
Reply to  Jim Steele
July 29, 2024 9:46 pm

This is just throwing stuff against the wall. These two graphs contradict the one you firct showed, with no peak in the 1930’s. Instead they show that there were many fires in the years when there was no control effort. But how big?

The third is particular to Oregin protected areas. The fourth is just a rehash of the census-based data that the NIFC repudiated.

Reply to  Nick Stokes
July 29, 2024 11:43 pm

Are there more fires, fewer fires or no trend over the last 100 years?
Should be reasonably easy to answer.

Reply to  Nick Stokes
July 30, 2024 4:20 am

This is just throwing stuff against the wall”

And all you have done is chunder then flush round the “S” bend.

Your comment contains absolutely NOTHING of any worth what so ever.

Just like most of your recent comments.

Reply to  Nick Stokes
July 30, 2024 6:20 am

How silly! AlanJ and Nick are diverting attention from the main theme of this article has climate change caused more burnt acres. Forest trees dont ignite unless there is sufficient heat, and that requires substantial kindling from underbrush and debris. Grasses serve as the tinder that ignites the kindling. Grasses fire burn at 1000F. Grasses are the easiest vegetation to ignite and allow the most rapid spread of a fire. Grasses are one-hour fuels that become flammable a day, no matter the climate.

The data showing more fires during the LIttle Ice Age should eliminate global warming as the driver.Bigger fires are due to fire suppression that allowed the kindling to accumulateCalifornia’s biggest fires based on burnt acres

The Park Fire 2024 was clearly set by arson and is called a wildfire.
The Dixie Fire 2021 was started by electrical problem 963,309 acres
The August Complex Fire 2020 lightning 1,032,648 acres

Yet they all get called wildfires and their burnt areas conflated.

Reply to  Nick Stokes
July 30, 2024 8:25 am

So far Nick has misspelt “documant”,”firct”,”Oregin”. That’s a quality tell.

Reply to  Nick Stokes
July 29, 2024 6:57 pm

And more scientific data

oregon-fire-cropped
Reply to  Jim Steele
July 29, 2024 7:24 pm

Jim Steele:

As near as I can tell. all of your supporting graphs end at or before 2020. There currently are intense weather events happening in the US and around the world, suggesting that we have entered a new regime of higher temperatures.

Your remarks may well be premature!.

Rick C
Reply to  Burl Henry
July 29, 2024 8:15 pm

Burl Henry>

There currently are intense weather events happening in the US and around the world, suggesting that we have entered a new regime of higher temperatures.”

Nonsense – there are always “intense weather events” happening somewhere in the world every year going back to the beginning of recorded time. You think that climate has changed since 2020? What happened to defining climate as average and range of conditions over 30 years or more?

In 1871 a severe drought and heat wave contributed to the great Chicago fire and millions or acres burned and many lives lost in Wisconsin and Michigan the same week. (Google <Peshtigo Fire>). 1871 was when CO2 was around the perfect 280 ppm level and the climate was perfect according to your Climatologist experts.

Reply to  Burl Henry
July 29, 2024 8:20 pm

Your remarks may well be premature!.

Your remarks are moronic. There is zero evidence of increased wildfire caused by human co2 additions into the atmosphere.

Reply to  Mike
July 30, 2024 2:05 pm

Mike:

I agree that there is zero evidence of increased wildfires caused by human CO2 additions into the atmosphere

However, there is abundant evidence that deceased levels of SO2 aerosol pollution in our atmosphere will cause temperatures to increase.

The most recent evidence is the warming that has occurred since 2020 due to the low-sulfur mandate for all maritime shipping.

Reply to  Burl Henry
July 30, 2024 5:06 pm

 Let’s look at SO2 over the US.. (estimated values from graph)

From 1980.. 174ppb, to 1998… 89ppb (essentially halving the SO2 concentration)

UAH USA48 shows no change in temperature.

SO2 dropped from 79ppb in 2005, to 24ppb in 2015..

so to less than 1/3.

According to USCRN and UAH48, there was no change in temperature over that period.

Actual data does not support your conjecture.. So.. False. !

USA-SO2
Reply to  bnice2000
July 30, 2024 7:42 pm

bnice2000:

My data shows that whenever global SO2 aerosol pollution decreases, Jan-Dec average anomalous temperatures always rise.

(Common sense dictates that whenever there is less pollution in the atmosphere, temperatures will rise)

You say that UAH USA48 shows no change in temperature between 1980 and 1998.

However, HadCRUT5 shows an INCREASE in Jan-Dec average anomalous global temperatures from 0.196 Deg. C. in 1980 to 0.577 Deg. C. in 1998 (NASA/GISS 0.27 to 0.62 Deg. C..

You also say that according to USCRN and UH48 there was no change in USA temperatures between 2005 and 2015.

Again HadCrut5 temp. data shows that average anomalous global temperatures rose from 0.605 Deg. C in 2005 to 0.825 Deg. C. in 2015 (NASA/GISS, from 0.687 to 0.825).

Actual data supports my conjecture. I win.

Reply to  Burl Henry
July 29, 2024 8:42 pm

In the US everybody has to live in heated buildings because it is so cold outside during most of the year.

Bob Rogers
Reply to  scvblwxq
July 30, 2024 9:24 am

Maybe where you live, but I use the AC more days than the furnace.

Reply to  Bob Rogers
July 30, 2024 9:38 am

Given that, you would be the one to ask.

Do you have waaaay more wildfires than the continent average
Do you must have waaay more wildfires now than in the 1950’s.

Reply to  scvblwxq
July 30, 2024 7:44 pm

scvblwxq:

Yes, winter weather does drive people inside most of the year.

Reply to  Burl Henry
July 30, 2024 4:12 am

Complete BS.

There has been a strong, totally natural El Nino.

You sound like Luser or fungal with your chicken-little hysterics.

Your remark couldn’t be more idiotic… But I’m sure you will try. !

Reply to  bnice2000
July 30, 2024 7:49 pm

bnice2000:

See my reply to your idiotic comment, above

Reply to  Burl Henry
July 30, 2024 10:42 am

“suggesting that we have entered a new regime of higher temperatures”

Which couldn’t have possibly been caused in any way by the 40 gazillion tons of H2O injected into the planet’s atmosphere by the Tonga eruption.
Nope, no evidence whatsoever.

Reply to  Nick Stokes
July 29, 2024 7:10 pm

Scientific data from US Dept of Agriculture, National Report on Sustainable Forests – 2010 pg II-48

US-Forest-Serevice-fire-acres-burnt
AlanJ
Reply to  Jim Steele
July 30, 2024 5:08 am

The acreage burned data for the US simply aren’t congruous before and after the mid-century:

https://youtu.be/D4iqqn103Do?si=ok_1Kyc6BDZDU7qc

Prior to the 1960s the Forest Service classified any unsanctioned burning as a wildfire, including controlled woods burning in the southeastern US. The spike doesn’t represent a change in burn area, it represents a change in reporting practices.

Reply to  AlanJ
July 30, 2024 6:20 am

How silly! AlanJ and Nick are diverting attention from the main theme of this article has climate change caused more burnt acres. Forest trees dont ignite unless there is sufficient heat, and that requires substantial kindling from underbrush and debris. Grasses serve as the tinder that ignites the kindling. Grasses fire burn at 1000F. Grasses are the easiest vegetation to ignite and allow the most rapid spread of a fire. Grasses are one-hour fuels that become flammable a day, no matter the climate.

The data showing more fires during the LIttle Ice Age should eliminate global warming as the driver.Bigger fires are due to fire suppression that allowed the kindling to accumulateCalifornia’s biggest fires based on burnt acres

The Park Fire 2024 was clearly set by arson and is called a wildfire.
The Dixie Fire 2021 was started by electrical problem 963,309 acres
The August Complex Fire 2020 lightning 1,032,648 acres

Yet they all get called wildfires and their burnt areas conflated.

AlanJ
Reply to  Jim Steele
July 30, 2024 7:09 am

Yet they all get called wildfires and their burnt areas conflated.

Because they are uncontrolled burns. The classification of a fire as a wildfire does not depend on the specific ignition source.

Reply to  AlanJ
July 30, 2024 9:42 am

“… it represents a change in reporting practices.”

Reply to  Jim Steele
July 30, 2024 8:04 pm

Jim Steele

There were more fires during the LIA because of reported drought conditions.

“Grasses are one -hour fuels that become flammable a day, NO MATTER THE CLIMATE”

Those fires do not eliminate global warming as a driver.

Reply to  Burl Henry
July 30, 2024 8:13 pm

Fires ignited and spread in grasslands certainly eliminate climate change. But apparently Burly believes if grasses become flammable in a few hours, that flammability is driven climate change. LOL

Reply to  Jim Steele
July 31, 2024 1:52 pm

Jim Steele:

Extended periods of drought are caused by climate change, which dries out vegetation, making fires more frequent.

Or so says Jim Steele

Jeff Alberts
Reply to  AlanJ
July 30, 2024 9:35 am

So what you’re really saying, as with Hurricanes and detection/reporting improvements, we have no idea what wildfires were like prior to 1960. Which means we can’t make any rational judgements about wildfires now being “unprecedented”.

Reply to  AlanJ
July 30, 2024 9:41 am

“The spike doesn’t represent a change in burn area, it represents a change in reporting practices.”

Make a copy of this and tack it somewhere that will remind you of the current climate business mentality.

leefor
Reply to  Nick Stokes
July 29, 2024 9:07 pm

And yet “https://www.nature.com/articles/s43247-023-00993-1” uses data from 1981. 😉

Reply to  Nick Stokes
July 29, 2024 10:13 pm

So, Nick, NIFC have only 40 years of official data.

Would you agree that those claiming unprecedented wildfires do not have sufficient evidence to support their claims?

Nick Stokes
Reply to  Redge
July 30, 2024 2:51 am

I don’t think NIFC are claiming anything.

People are noticing that whole towns are burning, which hasn’t happened in their earlier memory.

Reply to  Nick Stokes
July 30, 2024 4:16 am

Again with the arrant BS.

Plenty of towns have “burnt” before…

Also, a lot more people are living in close proximity to the bush..

… as well as bush now not being properly maintained due to dumb greenie agendas.

You are making some particularly STUPID comments recently.

Get your mental health checked.

Reply to  Nick Stokes
July 30, 2024 4:40 am

I didn’t suggest NIFC were claiming anything, Nick

I asked if you would agree that those claiming unprecedented wildfires do not have sufficient evidence to support their claims

oeman50
Reply to  Nick Stokes
July 30, 2024 4:51 am

Does that fact that there are more small towns now than in the past make any difference to what “people are noticing?”

Reply to  Nick Stokes
July 30, 2024 4:56 am

There’s a lot more people in the arid west than half a century ago.

Reply to  Joseph Zorzin
July 30, 2024 8:31 am

And a lot more people building their “dream home” surrounded by enchanted forest.

Jeff Alberts
Reply to  Nick Stokes
July 30, 2024 9:37 am

I noticed you didn’t answer the question.

Reply to  Nick Stokes
July 30, 2024 9:48 am

It is true that I don’t have a memory of London burning. Hell, I can’t even remember the Chicago fire. Smaller and closer to home, I can’t even remember the Wendling fire(s) ….

There be lot’s of towns that disappeared from history; burned out, and not rebuilt. The fact that it was before your time doesn’t mean it did not happen.

Dear God, Please stop the world from revolving around Nick. It is making him dizzy.

leefor
Reply to  Nick Stokes
July 30, 2024 11:36 pm

Ah Memories. Such a long term measure, entirely dependent on the age of the memory maker.

Reply to  Nick Stokes
July 30, 2024 1:26 am

LOL

Stokes claims wildfire data is unreliable, ignoring of course, that the Stephenson screen was’t adopted by the British MET office until nearly 1900. The basis upon which the entire climate scam is constructed.

It wasn’t adopted by America until some years (decades) later, who built a different version, and wouldn’t have been a common feature in LOCAL weather recordings until around the 1950’s.

Goodness knows when it was rolled out across the Soviet Union and Communist China.

Not that meticulous records were kept, with many of their measurements guessed at by scientists many years later because too many tea boys were off having a quick cigarette instead of recording measurements.

But this is the foundation upon which catastrophic climate theory is built.

Nor is there a Stephenson screen to be seen, ever, across 70% of our planet, the oceans.

Chuck in UHI’s, badly sited weather stations in airports, next to air conditioning units etc. and we realise, Stokes doesn’t have the faintest clue about science and that, considering those factors, no one with two brain cells to rub together could rely on a temperature fluctuation across this planet, over 124 years to within even 1°C, never mind tenths of a °C.

The ‘Climate Crisis’ is a Technology Crisis with even our satellites not being entirely reliable until, probably, around the turn of the century. It was only then that Argo floats began to be launched to measure sea temperatures with all their early teething problems. Only now are they reliable enough, with sufficient numbers, to begin to build up an accurate picture of SST’s.

But I guess it’s all OK as we have Michael Mann’s tree rings to deliver the truth, even if he won’t release critical data, which is fine, because we trust him.

Stokes is so obsessed with the ‘numbers’ of ‘climate change’ he can’t see the wood for the trees…….(pun).

Reply to  HotScot
July 30, 2024 8:33 am

You don’t need Stephenson screens if you infill and homogenize your data. /s

Reply to  HotScot
July 30, 2024 5:44 pm

“tree rings to deliver the truth”

Here is Briffa’s tree ring data from 1900.

Things to note..

1… large bulge through 1940’s

2… 1979 around 0.8C COLDER than the 1940s.

3… 1940s much warmer than around 1990.

Matches most raw NH data rather well 😉

Totally different from the Urban fabrication of GISS et al.

Briffa-Tree-data-1900
Reply to  bnice2000
July 30, 2024 8:10 pm

bnice2000:

Also matches the amount of SO2 aerosols in our atmosphere rather well.

Trying to Play Nice
Reply to  Nick Stokes
July 30, 2024 5:19 am

And how many thermometers did we have around the world, especially over the ocean that you know we are warmer than 150 years ago? You’re just a hack psuedo-science buff who cherry picks which BS you want to push as the truth.

Jeff Alberts
Reply to  Trying to Play Nice
July 30, 2024 9:39 am

It wouldn’t matter how many. All that would tell you is whether those particular areas warmed, cooled, or remained relatively static.

Trying to Play Nice
Reply to  Jeff Alberts
August 1, 2024 12:28 pm

The point is that there weren’t thermometers everywhere so we have no data for most of the world 150 years ago.

Reply to  Trying to Play Nice
July 30, 2024 11:37 am

150 years ago

New earth creationists think the earth is 7000 years old.
Greens apparently think it’s only 150 years old.

Reply to  Nick Stokes
July 30, 2024 9:33 am

“Prior to 1983, the federal wildland fire agencies did not track official 
wildfire data using current reporting processes. As a result, there is no 
official data prior to 1983 posted on this site. “

Imagine if all other agencies utilized that same standard … specifically for CO2 & temperatures.

‘Hey, we’re not gonna look at it because we didn’t officially look at it before. No, we’re not just ignoring it because it doesn’t fit a specific narrative, so please don’t accuse us of that. We just come to work, do our job as Public Servants … we work sooo hard that we don’t have time to put in the effort that it would take to mislead anyone’.

John Hultquist
July 29, 2024 8:12 pm

 Those claiming fires are bigger and more frequent than in the past flunked Fire-History 101.
Here are two biggies:
#1: Chinchaga fire – Wikipedia (1950)
#2: Great Fire of 1910 – Wikipedia
Further, by laying the blame on Carbon Dioxide and Global Warming they try to free themselves from a responsibility to actually do something useful.
Consider the cause of the mentioned Park Fire in CA: A troubled person, Ronnie Dean Stout II, 42, of Chico, was arraigned Monday in connection with the Park Fire, he was charged with felony arson with an enhancement of special circumstances due to prior convictions. That is, he deliberately pushed a burning car off a cliff into fuel.

July 29, 2024 8:17 pm

Recent work points toward anthropogenic climate change rapidly altering Western United States

No it doesn’t. Prove me wrong Mr ”scientist.” I’ll wait……….

John Hultquist
Reply to  Mike
July 29, 2024 9:05 pm

Cheatgrass has altered things where I live in central Washington State, just east of the Cascade Crest and eastward into Idaho. I’ve only lived in the region for 50 years, so might have missed the “Climate_Change”™ thingy. 🙂
Interesting reading from 2012: Great Basin scientists unleash new weapons to fight invasive cheatgrass – High Country News (hcn.org)
Other invasives are mentioned.

Reply to  John Hultquist
July 29, 2024 11:47 pm

Indeed. The point is they are blaming humans for increasing fires because of co2 emissions. There is no doubt that changing the type of ground cover can change fire risk.

Reply to  Mike
July 30, 2024 4:58 am

and the lack of professional forestry

July 29, 2024 8:49 pm

The Giant sequoia trees in California need fires to reproduce. Fire on the forest floor causes their cones to dry out, open and release their seeds.

This adaptation ensures that the tree times the release of most of its seeds to coincide with fire, which creates ideal conditions for regeneration success. Fire burns off woody debris and exposes the soil, it creates an ash layer that returns nutrients to the soil and increases sunlight by killing some of the competing pines and firs.
https://www.savetheredwoods.org/interactive/giant-sequoia-and-fire/

Giant sequoia trees have been around for 200 million years with fires to help them reproduce.
https://www.giant-sequoia.com/about-sequoia-trees/

Mr Ed
Reply to  scvblwxq
July 30, 2024 5:57 am

Lodgepole pine also needs fire to release seeds from the cones. The “Big Burn of 1910”
was after a beetle kill. Some 3 million acres burned over a few days.

Reply to  Mr Ed
July 30, 2024 10:04 am

They really don’t need fire.

Seeds drop and germinate without fire.

Although fire does ‘prepare’ a better ground, and causes a much larger of number of seeds to drop for faster regeneration after a fire.

Bob
July 29, 2024 9:18 pm

Well done Jim, keep up the good work.

Mr Ed
July 29, 2024 9:20 pm

Timely piece, the smoke has been rough this summer here in the N Rockies
from all the fires.

It’s impossible to say what effect, if any, humans are having on the climate
until the parameters of natural climate change variation have been established.
For some reason those parameters seem not to be of any interest to the Climate
Alarmists..

I’ve posted this here before but it shows some of the differences in climate
here in the Rockies over the past 1000-2000 years,

https://billingsgazette.com/lifestyles/recreation/archaeologists-uncovering-ancient-peoples-widespread-use-of-mountains/article_b589afe6-194b-58d7-a1b1-7442b8c10220.html

From the study=====>

“The scientists are also finding that the high country wasn’t the same as we now see it. Old whitebark pine stumps have been dated to 1,100 to 2,100 years ago in places that are now 500 feet above where trees are growing now, Guenther said.

“These were happy, well-fed whitebark pine,” he said.

That points to the possibility that the high country was warmer for a period of time, maybe encouraging occupation when lower elevations were stricken with drought.”

The management of the forest in the west changed after the “Big Burn” of 1910
and the creation of Smokey the Bear.

Capt Jeff
July 29, 2024 11:16 pm

I have seen graphs that also depicts how climate based ignition source, i,e. Lightning, are fairly constant while man caused, camp fires, downed power lines, cigarettes, arsonists (including radical environmentalist) and house construction in fire prone areas), etc are an ever increasing cause of fires.

Dave Andrews
Reply to  Capt Jeff
July 30, 2024 8:06 am

The European Environment Agency Mediterranean Region (Portugal,Spain,France,Italy and Greece) 2022 report said

“96% of wildfires in the EU are caused by human actions” – that is arson or accident

July 30, 2024 4:40 am

From the article: “First, they dishonestly ignore the scientific evidence that far more fires happened before the 1930s when CO2 and global temperatures were much lower than today.”

It was just as warm in the 1930’s, as it is today.

From the article: “Grasses and shrubs are classified as 1-hour and 10-hour fuels, because they become highly flammable in a few days of dry weather no matter how climate has changed.”

This is why the temperature doesn’t matter when it comes to wildfires. Dry weather is the cause, not hot weather.

The current temperatures in my area are running right at 100F, but we are not worried about wildfires because we have had enough rain to keep things green up to this time. So dryness is the cause of wildfires (that, and criminals pushing burning cars into the forest), not the heat. It can be hot and not dry at the same time, like it is here, now.

July 30, 2024 8:09 am

Like our professor jokingly told us in a class about forest fires in the forestry curriculum at Oregon State University in the mid-1960s, the 3 most important factors regarding forest fires are fuel load, fuel load and fuel load, in that order. It was true then and it’s true today!

July 30, 2024 8:40 am

Despite evidence that heat waves have no significant effect on grassland flammability…”
Unfortunately this is NOT TRUE. The dry winds associated with media reports of “heat waves” highly correlate with subsequent fires. Ask any fire department.

Reply to  DMacKenzie
July 30, 2024 9:56 am

But it IS TRUE “heat waves have no significant effect on grassland flammability.”

Stagnant air under the high pressure system, not high winds, is a common feature of heat waves. Furthermore winds will indeed increase the rate of fire spread, but not flammability! Dead grasses are already desiccated enough to be highly flammable under any wind conditions. Also fires will create their own winds. The dry winds such as California’s Diablo and Santa Anna winds very much spread wildfires, but those winds are due to a cooling interior cooling faster than the ocean causing off-shore winds, not due to a heatwave!